online CIDR and IP subnet calculator : Check host

202.128.31.0-202.128.31.15
202.128.31.0/28

202.128.31.16-202.128.31.19
202.128.31.16/30

202.128.31.20-202.128.31.21
202.128.31.20/31

202.128.16.0-202.128.23.255
202.128.16.0/21

202.128.24.0-202.128.27.255
202.128.24.0/22

202.128.28.0-202.128.29.255
202.128.28.0/23

202.128.30.0-202.128.30.255
202.128.30.0/24

IP subnet calculator 202.128.16.0-202.128.31.21